Karthik Kumar
Associate Support Specialist
About
Cybersecurity and IT professional with 4+ years of progressive experience across Data Analysis, Identity & Access Management (IAM), IT Support, and Incident Response.
Skills & Expertise (5)
Work Experience
Associate Support Specialist
NielsenIQ
9-2024 - Present
Deliver enterprise-level EUC and system engineering support, acting as an escalation point for complex identity, endpoint, and virtual desktop issues. Administer Azure Entra ID, including MFA reconfiguration, Conditional Access policies, account recovery, and SSPR support. Manage Active Directory user lifecycle operations: account provisioning, access control, group membership, and mailbox setup. Support and troubleshoot Azure Virtual Desktop (AVD) / VDI environments, improving remote access stability and user experience. Diagnose and resolve advanced issues related to Windows OS, hardware failures, VPN connectivity, DNS-related access problems, and authentication workflows. Handle incidents and service requests through ServiceNow, contributing to a 20% improvement in average resolution time while maintaining SLA compliance. Designed and proposed self-service authentication solutions (IVR-based password reset, secure identity verification) to reduce manual workload and improve operational efficiency. Collaborate with infrastructure, security, and engineering teams to support platform changes, system improvements, and incident root cause analysis. Owned RCA for recurring EUC and authentication issues, improving platform stability.
Data Processing Analyst
NielsenIQ
8-2021 - 6-2023
Processed and validated large-scale datasets while maintaining high accuracy and compliance standards. Utilized SQL and Excel to support reporting, operational analysis, and internal system workflows. Developed strong problem-solving and analytical skills transferable to enterprise IT environments.
Senior Data Processing Analyst
NielsenIQ
7-2023 - 9-2024
Supported enterprise data operations in a global environment, improving delivery timelines by 10% through process optimization and automation initiatives. Worked closely with cross-functional teams to ensure data integrity, system reliability, and operational efficiency. Contributed to automation efforts that reduced manual effort and improved consistency across operational workflows.
Education
Master of Computer Applications (MCA)
2022 - 2024 · India
Bachelor of Science in Computer Science
2018 - 2021 · India
Certifications
Certified Ethical Hacker (CEH)
EC-Council · 2024
Certified Ethical Hacker (CEH) with hands-on expertise in Azure Active Directory, cloud security, endpoint protection, and automation using PowerShell and Python.
Ethical Hacking Essentials
EC-Council · 2023
Ethical Hacking Essentials – EC-Council, 2023
Entry-Level Cybersecurity Training
Cybrary · 2022
Entry-Level Cybersecurity Training – Cybrary, 2022
SQL (Basic)
HackerRank · 2022
SQL (Basic) – HackerRank, 2022
Python (Basic)
HackerRank · 2022
Python (Basic) – HackerRank, 2022
